Lifting truck



LZQHE@ Nav., 3, 1931. A. M. BARRETT LIFTNG TRUCK Newo 3 1931. y A. M. BARRETT LIFTING TRUCK fas Patented Y ARTHUR- M. BARRETT; oF'ffWKINN-TKA; "ILLINoIs, AssIGNoRTo -BARRETTLCRAVENSL COMPANY; 'onen-renee, jmraawors'ai CORPORATION on LLrNors- @Listino applicatifiii.,i'iiiieiiAv aune A25', [1923,: serian Iii/ly invention Arelates to lifting trucks k:of the typefcomprisinga Wheel-supported frame arranged to be n steered' 4byf'means *off a lever or 'handle, Vwhichalso is er'np'loyedv to'rai'se a lifting. frame or yplatfforin supported by the Wheeled ojrniain 'franief. In trucks of. thisV description it is common to connect the lift y ing frame with the" niain frame by links attached toi-he end portions 'offsaid frames, and'so arranged that forward-pull'onthe lifting frame causesit to 'rise and at the same tijrne move forward'. fTwo VWheels', are 'Ius-y ually providedat' the rearl of' th'e truck' for? t ,i supporting the main frame,-y and' eitherA one or two `steering wheels support the ,forvvard'jy portioniof the manframegandihaye sfwiyeled connection thereWitli'fsoft-hat byftilrningfsaid Wheel jor Wheels through'tlie instrumentality of'thef handle the truck, may bel steered. The steering Wheel or Wheelsaie generally 'oon-y nected With the inain; frame byv means'jof a' A cio'sshead 'which extends-transversely ofthe' of the mainf frame. using` these trucks `they are ybacked under an inverted U-shaped support Qrpltform on Whiclithe load to be transported i'sfpiled; the lifting' platform.

Vbeing.thenin its loi'verinost position., Said lifting 'fraineis then elevated byswinging the f leyer or handle i forwardfthereby raisingy the loa'dlsupportingplatform'with its load sufficientlyhigh' to safelyfclearthe floor. VThe in itslelevated.positivonand the truck withits loadinaylbe freely nioved to the plac'ewhere l vit desired to deposit'the load. rkThe latch which holds theV lifting france initsele'ated.y

Y positionis then released'toperinit ysaidfrai'ne l todescend and deposit the load-supporting'-'` I y y y s l n 13% Intel-inediatelythe side bars 55 6 are con# y.The object of my! presenti'inventionfisj to ijrprot'ide' improved'V lifting'mechanisni fory Jtruc Cv; ofthe kind abovefreferred to,V bywhich 4 heayyljoads may,bejraisedwiththe Lexpendia` ture of coinparatiyelylittle*effort on thepar't'rv of'the operatorf the positionof the` Fig; Ssia plan View, the handle and shackle mainV ffamg at or nearitg frwardendjfand ,m'en'iberthrough which itis connectedwith` isffix'edly connected "with the side members liftingfra'ine inaybe at alliirnes under-'his lfull controliby which theV leverage'of the'I handle effective i for lifting the load 'will' be greatest yduring the early stages of the lifti ing'foperation; by'wlii'ch the lifting mecha' nis'in may be actuated conveniently from-any steering position of the handle; and' gen'- erallyto improve the construction and operai` tion of"trucks of thisA type. I accomplish "this object'as illustrated in the 'drawing'sand, as'liereinafter described. 'W'hat I regardV as "newsT 'is set forth in the claims..V

's Infthe drawingsfl Fignlisjprincipally a side elevation ofmy improved truck, part of the near sides of the krnairijand lifting frames, and of the handley being brokenfaway the better to show' the construction; v

Fig; 2is an'enlarged' detail, being 'a' par;

ongitufdinal'Verticalsection on line 2.-2'

th'elifting frame being ink section; and

lii'g.v *4"isfga partial longitudinal vertical sect-ionen line 444 of Fig. 3;'V y y Referring to the drawings-5;' 6 indicate the side' `members of the main or Wheel frame,y which y"aref preferably angle bars and" are rigidly connected together to form a" rec- `.tangu'lar frame. The' rear end portions of theside bars 5;6 are connected by a .trans- Verse'plate '17 as shown in4 Figs. 3 ande, from Whiclrabracket S'eXtends rearwardlyv said` "bracket Ibeing:provided with arms 9, l0 having bosses 1l, 12 at their rear ends" provided' with 'ou'rnalbearings in ,which is journaled the reali;axle 13 of`.the.truck, as shown inthe' latter figures; 414:,"15 indicate the rear Wheels of .tlietruc'k whichv areA mounted on the 'axle' lill nected by ajstransyersebfar '16, which is pref? erablyan angle'bar, and at their forward" endslithe side;bars `5, 6 are' connectedby a U-sh'apedf Icrosfshead 17,'the downturned ends i '18*of vWhichfaire fiXedly kconnected Withtlie l iN V"llVlren the liftingl frame isfin itsloweredd or loadingiposition itstside: members; rest at 4the rear onll the'proj ecting; ends' of the 1 rear .axle

13,',fas shownfinfIfig'g/suil:ande., .lifting f. f rhe' mechanism-z forv raising? the s 'nagegaan .frarrie,fr.which as lfhas;v been suggested; is factuaitedlbythe liftin'grhandlez 28- in conj u nc- `:tionlfwi:th1-the shackle member 29, ydouble link Y pi42andl-`fVshaped 47,Y ,will nowl be defserib'ed.'" It; comprises* :a: horizontally;` dis- }:posed'fluted ratchet: wheel -58vfmounted Lto r'otat'e about th'euppe'r end ofa Verticalv shaft i591 whichfri'ses fronifthe 'Grossi-plate?? in which it is supported yand secured'byfa'pin60fshown Y rests;vv and said ratchet vWheelwis secured in position' by a swinginglarmi 61, hereinafter ldescribed and; "a screwy 62 or. othen suitable means-At the-,underside of the ratchet I istA wheelf58, and also :mounted on the shaft 5,9,

a isi-:afc'amf whichisiixedly secured toy said raftch'etwheel,fpreferablyrby afscrew 64. I `The :caniv 68 -bearsfagainst the* periphery off an 'anti-friction roller V65jpourna1edon apivot 66 `mounted, between the `upper and lower members 67 -68ffof ai crosshead, the endpor-l `ticmsdcjf whichfare providedwithfanti-friction 1 rollers 69, 70 that ride on thevvertical flanges I of fthe side'members 5',16,'as shown in Fig.f3, vwhen lthe. crosshead moves longitudinally yof the'main frame.v By lthis construction the' roller.H 65% isiheld properly in position-and operates veasily land?, smoothly. Preferably Y ..antrfrictionrollersp71 ,are provided between t'herpivot pin 66 and the roller 65, as shown in .Fig;`i;4. Therfc'rosshead:composed ofthe members 67 68 is'con'nected with the crossbarf511of'thez liftingframe .by thrust bars or plungers*72,J-73, the rear endsfofwh-ich are 'connected with the rend portions of said crossp -head,whi-le 'their' forward' endsk 'are rounded '.andtbear in thrustfblocksy-74, A75v Carriedby e ,'kthrustbars'Q, 7 3' longitudinally of theniain 'frameito the vright,thereby' rockingl thef links te; 53, 56; 57 thatisnpprt the liftingfmme, i l a clock-wise "direction as" 'viewedj in :'Figll 1,

fthecross-bar 51, asindicatedby dottedlines linf-Fig and shownin full linesinsFigi-2. Preferably the forward ends,l of? the ythrust #bars 72,- are provided'with pins -7 6 which pass: through .f holes in the thrust lblocks 74,

`f7 51 andaresecured bycotterpins 7 7,y as shown l2'.l When the lifting rvframe is: in its lowermost position ethe cam`63 occupies the position; shown in Fig.V 3, andthe roller v,65

,is then at theextremeileft kof its 'range of f meyement asyviewedin saidiigure, l ,It will Ibejevidentthen thaft'by rotating the ratchet wheelI 58and thecam 68 with it, in a Counterclockwise 'direction :als `i'fiewed 'in said ligure 'and 'as indicatedy bytlief arrow vthereon, the

Vcaniw'ill operate' to move said roller andthe Y icheleyates thelifti'ngffrare tovardthe also, that by reason of-tleshape andarrangenient vof the cam v63, the greatest/'lifting leveragewillvbe furnished at thebeginning ofthe' lifting operation, at which ,time itA is desirable to! have it, for obviousjreasons.

Rotationiof the. ratchet Wheel 58 in the op,- posite directions. of course lowers the'lifting frame. e s

Theratchet wheel 58 is'rotated to raisethe lifting frame by means` of a pawl 7,8,y pivoted atz-79gonthefswingingarm 61. This swing? Aingy arnr extends horizontally vover the up'fp'er surface ofthe ratchetwheel to apoint beyond its periphery where it' carries the pivot 79, as

shown-'in Figi `'lheouter end of the pawl 78 is providedfwith a tooth 8O adapted -to fit'inthenotchesof the ratchet wheel 58 when the outer end Vofthe pawl is moved toward the axisrofthe' ratchet Wheel, but which clears the 'teeth of the ratchet Wheelwhen the pawl is inthe position shown in Fig; 3, in which lposition itis normally held by ay spring 81 mountedonia rod 82, the rear end ofwhich is connected withthe forward or outer end of I;

the vpfawl 78 by a pivotx83. One end of the spring 81 bears against a collar 84 secured to the`rod82, whileits opposite orforward Lend'beaus against a stop plate 85secured to the side member 5 ofthemain frame. e lConf fsequ'ently the spring tends to move the' rod 82 rearwardly andto hold the pawl 78 'outof-op'- erativeyengagement with the ratchet wheel.

rThe forward end of the rod' `82 extends through the stop plate 85 and is pivotally con- 1i nected to' a'bifurcated'crank arm 86 carried byv portedbya crank` arm 90`near the opposite The crank arm Y' Ypositionyslownin-F ig- 2,1 It wil'lbegevident,

end ofthe rockshaft87-, and to the end porf tions of the'transyersefrodf89 betweenAthe arms 88gv 90 are connectedthe `end portionsy of al bail 91 to which the link: 47 is-secured,

. as shown in Fig. 3: (The arrangementis such ,that by. pulling forward on the link 47 thelpull Will/bey transmitted by the bail 91 to thevrod 89, therebyrocking the' arms 88,' 90 forwardly orina-clockwise directionv as Viewed 4in Fig. 71, andlconsequ'ently pulling the/rod 82 for- 'Ward It fwill be noted that the pivotf 83'nor-` mallylies'outsidea line drawny from the pivot 79'ofthe pawl 7 8to the forward pivot of the rod:82,andconsequently when the rod 82 yis drawn forward it will tendzto swingfthe pawl 7 8"toward' the ratchet 'wheel and ,cause itf'to engage: the teeth f-theref Further' forward movement ff of i the,`A rod i 82 will consequently directibnfindicated'by"the arrow'in Fig.

l VVVUponrela*Xz'ttonof thepulllthespring SlfwillV novefthe parts'ba'ek tothel position shown 1n inu-readiness'fo/jr' V'arepetition of ythe lifting strokeLf f It willbe' evident',rtherefore that p y vthe operator byurepeatedr pulling' strokes on il Vthe Vlifti'iiga:handle may rotate .the-'ratchet' i Y Y wheelbjto raise the lifting frame to any def A Y' L"lifor normally holding'the ratchet'wheelb sire'd'fheight within its range of movement.

' againstreverse rotation, a'fdetentw92 ispro-V y, vided'inthefornrof a lever pivoted inter-Y 'm'ediately o,f it s .length on' aV pivot 93 'suplported von a standard 94 carried bythe cross Y'plate 7 Zot thel main frame. The inner? end ofthe detent l92" is vprovided `wi-tlian "anti l `gtriction roller 9,5"adapt`ed toj-engage the notches of .the ratchet wheel'frS, this *roller jbeing `Ipreferably' `provided ,withV roller bearings,'a's' indicatedsinFigqS.' The opposite or 4' lheothera'rinfof vsuchbell-'cranklever is con-` i 'nected' by -a link 100-with a foot lever 101 ful- I eo outerendjof the detentis connected by a connectngrod 96 with onev arm ofa-bellcrank lever 97 Vmounted ona pivot 98 carried by a` standard y99 ,which rises from the lside-bar 6 of the main traine, .as shown in Fgf,

crumed'on'a pivot 102-siipported by lugsY 103 carried bythe crosshead 17;"as shown in Figj.

A-sprin'g 104 vis ymounted on Athe rod 96l 'and 4bearsiatitsrearend on a collar 105 secured toV said rod,v and-atl its rontend against a y'stop plate1106 .secured to the side bar-6 of the vmain frame.` By this'v construction when the front end of the toot llever 101 is depressed,

the rod 96 is drawnorw'ard against'theten sion of lthespring 104, .thereby moving the 'roller 95out`of engagement withrthe ratchet :wheel 15S.V 'llhe'springv 104 ,tends to move the rod '96T in the opposite direction and normally "holds vthedetentin operative 'engagement elevatedbf lPreer'ablyfL with the-ratchet'wheel,v thereby preventing descent of the lifting. frainebetween strokes of .theliftng mechanism,- orlwhenit has' been vabledescription'is"provided to vcushion the i descent or thelitingframe, said check being finterposed between ,the cross-barv 16 fot the .mainframe and? the cros'sfb'ar ll'ofthelittfingijtramei` I-,prefer Vtense the construction and 'arrangementforfthis purpose shown and.

I i' describedfin my" pending application'above v sentialito my present invention;l "Furthen more,-I'fprefer toconnect the lifting` lever.

,reerred-toibnt tlifeuse of a; checkis not es# with the lifting mechanism 'by means of theL f's'fhackle memberi29,doublelink 42 and link 47 ,'becausefby that arrangement the "lifting i :lever niay readily bxdisconnected from the `lifting mechanismg-and'; moreover, the litting operationl is yperformed vto better Iadvan` i 'Ltage- Y-Inorder thatthis may be better under- .Y stood, int-:may-t be'explained that at fthe begin- 'ning of 'the teilig opstaan attentati@ between.the.handle 28. andthe liftingmeeha- '.nismisata pointi'clo'seto.thefpivotpor-fulr i jcrumofthe handle;v consequentlythe level-` Vdifferent length'.Y Whenthis occurs the,` dog 41 y'movesintothe recess 40, thereby limiting thek eXtent'lto Which the flink'42 may be swung laterally Yrelatively. to the Vjhandle,V while. at

.the Sametime holding theinin operative'relationttoi each other. lItiwillbe seen'that,V Vowing to the link connectionffbetwee'n the handle and the mechanism forraising the fliftin g iframe, the handlemay be swung laterallysrto la considerable extent atany time during 'the ylifting operation without interjfering with itsv eiectiveness, .and thiswill V not interfere with the engagement vof the dogv 141 :with the. recess 40fand thevcorresponding iv,

ynotch in thejplate39, becausefthefsidesot 'et' .the link 42 otswinging laterally to alimsitedV Ieitent independently Vv"ofi 'the handle L avoids the tendency 'of the load to Inoverthe 'handle farther from' a straightlfore and aft position'if'v it should lbe out of suchwposition duringrthe lifting operation;'andlconsequently itmakes. easier .the operation"y of Vlifting Vwith thehandle at an angle to the-longitudinal axis of the truck. It Vshould 'begundercontemplates Vthe use of ,anyl other fsuitable yconnection between :the lifting lever or handle :and 'the mechanism by which the lifting 'frame is raised; Also Iinjother respects my f invention isY not limited .to'zthe yspecificfconstruction illustrated` and described, f elcept in so far asclairns may bejdrawn to specific features f "ofrk constructiom Vbut includes Y generi-Q gcally'the snbj ect'ematter ofthe broader claims. What'lgclaim as myinvention and desire 'to vsecure.byfLetters Patent, is-

'l/'said Vnotch-flare suiiciently toenablesaid dog i EtoA enter'itpandvthfe endlof thedog'is'fbeveled Ito, facilitate this operation ."=The capability "stood,y however,1 -that'my lpresent invention Y 110 Y 1,.' A lifting.truck'comprisingv main 'and Y liftingl frzn'iies,` supporting and [steering ,.Wheels, *aj-lever" operable to lit'the V lifting frame and toV steenthetruckyafrotatable memberv journalled between saidiframesto rotate about a verticalfaXis, 'means foin im# partingstepfbystep motion toy said frot'rat- Y able V member by repeiqltd strokes of said -lever,-and y means vrfor', translating therotaf meegaan tional :motion of said' Krotatable' lmeinber lifting motion fofjsaigd liffting .fra/me.'

I lifting frames, "failziftinglever, a -inember movable e'I-idvvi'se to irais'e' VAthe lifting 'frame, i and rotatable means-actuated by saidlifting Y lever kto rotate about aI vertical axis for mov# Ving said member endvvise. D

liftingt'frame, and rot'atabfleimfeans disposed under-saidliftingframe'jto lr'otate about a Yus i i V4c. A lifting truck vertical faxis and` 'adaptedtoV beractuatedby said lever when thesaine Alis 'turned' to various steering -positions for' lf movingr said thrust memberen'dvvise. V

I Y 'comprising main and lifting frames, ayertically swinginglifting lever, la member-movable endvvise to raise the' lifting frame, and l'horiontally disposed y rotatable ratchet mechanism actuated by saidfliftfing' lever'fermoving said inemberv A llifting truck mprisingjmain andV lifting frames, alifting'levena' thrust mem- Y ber `movable endvvise #to [raise the lifting yso frame, and` a lhorizrmtally disposed ratchet v vvheel `actuatedby 'saidj lifting le'fver for 'mov-1 ing'said thrust member ,endiviseg L f '6g-2A lifting 'truclfcomprising m'aingand lifting frames'-a draft"'amisteeringlever,'av

a' yrotatabley 'cam-L for' ,actuating said thrust f f member, and inte'mi'ttently'operated recip# Y rocating meansiadaptedtobejactuated by said leverlwhenthe same .isi'tu'rned to various Y steering positions 4for Vyro'fating said cam.

A l lifting itruckff'comprising. main 'and lifting' frames7 'alifting `lever,athrust member movable endvvise tojraise the lifting frame, and .a vearn adaptedfto' turn about a t member ',endWise'.

" substantially verticalaxis andjactuated'by said *lifting Alever 'y for ,moving said thrust f athrust member` movable longitudinally of the main frame to raise the lifting frame,

n a cam. for so 'movingy said thrust member, A and ratchet mechanism disposed belowy said` lifting; frame and'actuated by said n lever Vfor,

-551 actuating ,said'can'n l V"9. A Yliftingtruck comprising main' and Y lifting frames,a lifting lever,v a' ratchet Wheel v ing the liftingfrainef" mountedjto' rotate abouti v,a substantially vertical axis". reciprocati gjmeans mounted on' fthe main frame' for .rotating said ratchet im) ivheelibyfsaidflevei, adfrneans actuatedby l y y frame. y n

' f"17.-A lifting truck comprising main vand n lifting, frames, a lifting'flever, 'a crosshead` thef'rotationiiof f said ratchet Wheel for fraisf 10. jA Vliftilngtruck "co means actuatedby the-'rotation of said ratchet f3, lifting :truck :comprising A:main and y n I l Y i prising main, and .y frames, a liftifngfleverl afratchet Wheel'` Whse-ifm raising. the lining frame, a pawi y H adapted to cooperatewith said ratchet Wheel f2'. lifting truck fcomprising mainand'r andfnormally out of operative relation thereto, and means operated by movement'of said lever for moving said kpavvl into :operative engagement with said ratchet Wheel.

115A lifting truck comprising main and 1 l-ifting frames, a `lifting lever," aratchet Wheel,

means operated by the rotation of said ratchet lwheel Vin*v one direction for raising the lifting frame,a pawl adaptedto opcrativelyengage said ratchet Wheel, means operated by movement of saidlifting lever in Vonedirectionfor moving said pawl into Y operative engagement with andv rotating. said ratchetvvheel,

vand a spring for normally holding said pawl out of engagement. with said ratchet `Wheel.' i

l2. A'lifting-truclr comprising main and lifting frames, 'a lifting lever, a ratchet wheel disposed horizontally, means actuated'by the rotation of said ratchet Wheel in one Vdirec-k tion for raising the lifting frame, reciprocating means mounted on the mainframe, for rotating said ratchet Wheel in 'one' direction by the operation of said lifting lever, 'ade` i tent normaly preventing reverse rotation of said ratchet Wheel, and means for moving said detent out of operative position. 13. A lifting truck comprising main and lifting frames, a lifting lever, a rotatablei lmember lmounted to rotate about a vertical ff-1 4. A liftingtruck comprising main and lifting frames, a lifting'y lever, a crosshead movable' between the side4 members'of the f mairr -`frame,a thrust member between said crosshead' and the lifting frame, and means actuated by the lifting lever'formoving said thrust member endtvise to raise the lifting frame. 1 y y 15;y A lifting truck comprising main 'and lifting frames, a lifting lever, a crosshead movable `between the side members of lthe mainframe, a thrust1 member between said crosshe'ad and the lifting frame, and rotatable ineansactuated by the lifting lever for moving said thrust member endrvise to raisetlie lifting frame. y p

n 16. vA lifting truck comprising main and lifting frames, a'lifting lever, a crosshead movable between the side members of the main' frame,ra thrust member between said crosshead and the lifting frame, andl a cam actuatedlby the Vliftinglever for moving said thrust member endwise to raise the lifting movable between' the side members of the main frame, a thrust member between said axis, means actua-ted by the rotation ofvsaid l i orossheadand the lift'ing frame, avv camforf;

Y moving saidcrosshead endvvise,=and 'a ratehfe'tj 'i io Wheel'a'ctuated thelifting lever, for actuating's'aid cam.' i. v

ment lofsaid.A erossheadf'in .one directionfor.

laising the lifting frame, and means actu ated -bysaid liftingflever. forso moving said cross i 19a A Vliftingk1 and liftingfframes, alifting lever, a crosshead movablet between `theQsidef membersof the mainframe and having anti-.friction rollers 'bearing thereon, means actuated bytliemovzei Y' zo ment of Vsaid Icrosshead in one Adirection for raising the lifting frame, and means actuated by. saidflifting lever for so movingsaid @ross- Y '20. lifting'ritruckV comprising 11n/ain Vand lifting-":-frames,;y a lifting leveryia f'crosshead .movable between the side members of the main".frame,' an antiffriction roller lcarried by said crosshead', means. connected- With ysaid 'mainframe an. .anti-friction roller carried :bysa1d1crosshead,"means connected withsald 'crosshea'd for raising the lifting frame lby movement `of said l'erosshead 1n one direction?, a .cam,op erat1ve1y engaging said antifrict'ion roller,"and ratchet mechanism'iactuated y .22. A liftingltruek comprising'main 45:

movable between the side membersiofthe .main-frame, an antiffr'i'ction roller; carried] by Vsaidcrosshead, 'althrustfmemberconnectf..

by `said lifting lever for actuating said.}cam' to fmove the'crosshea'd. .Y

liftingV frames, valifting lever, a crosshead ed With the crosshead for raisingthelifting framebylmovement of vsaidcrosshejad'lin vone;

direction, a Cam 'operatively g engaging. said i' antifrietionroller, andmeansac'tuatedfby lsaid Ilifting leverV for vmoveftheero'ss'head. j

V23.5.14;liftingV truck 'Comprising main and lifting? frames,i a. lifting; lever,v aierosfsheadV Vmovable between the side membersvof-jthe y by saidcrOSShead, a thrust 'member 'connected with the.'V erossliead for iraisingthe lifting actuatingsaid cam Vto main. frame,- anV antifrictionV roller. I carried `frame by movement offsaid erossheadin one sai'dl'ame:mQvetheferosshed., f

direction @itam gperatvelyeesasins Said-1 Y` ,anti-'friction rollen and ratchet. mechanism actuated .by said. liftlngr'lever foraetuating AT-liftint'cfl'truck .comprising andi Y lifting frames, a Y' lifting ,.lever, a rotatable member 1-journalledfxbet-Ween said'4 frames,

posed between said rotatablemember andi said lifting frame lfor .transmitting motionv tosaid lifting' frame,V and.. meansejarried by said thrust membenandY engaging the side members ofthe main frarnefor guiding.. said thrust member for 'endvvise' movement.

25., .A liftingytruck-eomprisingmain and Vlifting i frames, links kpivotally `connecting said frames,- Where'by -said'lifting frameis raisedfbyiupvvard swinging mtion on said links, a lifting lever, a rotatable -`member journalled, between said' lframefsfV to rotate about a vertical axis,means folziimpart'ing step by vstep motion to. said vrotatable inemY motion of said rotatable member into endwise thrusting 'motionv applied .to 'said lifting frame fory raising ,the flatter.

lifting iframes, links. fpivotallyj connecting said frames',`V VwherebyY said- -lifting rframe is age oper@tively Connectingsaidfllever'to Said macabre, member; fr;.-ffimpa1ffing/astep-'by step rotation thereto', a thrustfmember inter 'posed betvveenf'saidrotatable member: and f saldi lifting frame;` and means :carried by d thrust :member` and -engaging the side members of the main frame.fol:gl ld1lg said thrust meinberg--for longitudinal' movement. "4 trucln comprisingain. combinatiem-fa supporting frame, a Yplatform eleva table vvithjrespect thereto, a draft and steery- .berby repeatedl strokes ofV said liftinglever, and means. fongtranslating l the rotational f26. -Alifting-trufck comprising maingndj c rosshead forraising the vlifting framev by l l movement ,ofsaid crosshead in one direction, fl a cam operatively engaging said anti-friction '.rollerl, and means actuated by said liftinglever-[for actuating L said cam'ftomove thel Verosshead. l v :f

" {QQ'lQA lifting truck (':ompi'isingr'nain and" liftingframes', a lifting lever, cro'ssheadA movable Y between thef-sidelmembersz ofi the raised by upwarfd swinging motionjon said `links,iaileverilervig asa dmtand steering @medien for saidltrlllka table mem-- f benjournalled Abelovvasaidv lifting., frame, linkits inglever,v Vmeansfor lifting theplat'form l' eomprisinga .means vo n thelframeffor supporting the shaft VVintermediate the ends ofthe .frame and. platform, aratehetmember yconnected with the shaftan`d positioned:` between the framean'd. platform, means for translating the motion of theatchet mem-V Yb erinto lifting motionof the platform, and

means adapted tolr be lreciprocated` bythe Yoperation Yfof' saidY lever when', the same is turned to `variousv steering. positionsfrfimpartingfa step. bystep vmotion tosaidratehet member 'to raise the platform l ,128. A.. lifting. trcktcomprislng; lifting frames, a steering yolepivoted tothe Amain frame` on a tical axis, a; draft4 A and vain` and V5' rection, an operating. connection between the n s pawl and thelifting member formt-ating the 'i tion including a link connected tothe lifting Y 1,829,726r l Y '7 v-.turns, a lrotatable ratchet member journaled onthe; main frame anddisposed between the Y frames, a pawlcooperating withlthe-ratchet `member'for rotating the-latter in lifting dil pawl. in the rocking of the lever, said `connecmember and adapte'dfto be reciprocatedby turned to varioussteering positions .andfor yimparting step by step motion to said ratchet member, and means for translating the rotational motion-of said ratchet member into ARTHUR Mg BARRETT. 

